CN106356014B - In-cell touch display panel circuit framework - Google Patents
In-cell touch display panel circuit framework Download PDFInfo
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- CN106356014B CN106356014B CN201510410656.5A CN201510410656A CN106356014B CN 106356014 B CN106356014 B CN 106356014B CN 201510410656 A CN201510410656 A CN 201510410656A CN 106356014 B CN106356014 B CN 106356014B
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Abstract
The present invention relates to a kind of In-cell touch display panel circuit frameworks, it includes driving IC unit (3), a touch-control sensing control unit (11) and a display data writing unit (12), the end I/O of IC unit is driven to couple with touch-control sensing control unit and display data writing unit, circuit framework whereby, the concept that timesharing of arranging in pairs or groups drives, panel is set smoothly to operate touch-control and display function, and the problem of reducing entity pin (pin) number of driving IC, reducing configuration whereby.
Description
Technical field
The present invention relates to a kind of In-cell touch display panel circuit frameworks, subtract more particularly to a kind of physical signal port
Few multiplexing circuitry.
Background technique
Conventional touch, which is shown, integrates panel, and the input and reception of the sensing signal of the control signal and touch-control of display, are point
It is not controlled by different driving IC, the interference each other between signal is lower, is also not easy to have the integrated space of signal wire
Collision problem, but with the development of integrated touch control display technology, whether external hanging type or embedded touch technology, with whole
Conjunction degree increases, and the collision problem that above-mentioned signal wire integrates space can all increase therewith.
With at present most for conformability and emulative embedded touch technology, when touch-sensing and display signal penetrate
Identical touch-control display driver integrates IC(Touch Display Driver Integration TDDI) it is driven
It is dynamic, cost (IC/FPC number and saving Bonding operation) can be reduced, however such practice will will receive great problem
It is challenged, (quantity is significantly increased in the display signal line of display and the signal wire quantity of touch-sensing after as integrating
Superposition), so the I/O quantity of the new control IC made is increased considerably, and then cause the configuration of panel difficult and complicated
The signal interference that cabling is occurred is more serious, and so above-mentioned problem limits the embedded touch technology of resolution panels
Application.
In response to the above problems, the main exploitation of current industry and solution are the low temperature for being inclined to use high production cost
Polysilicon (Low Temperature Poly Silicon LTPS) thin-film transistor technologies transmit the data of display
The pin (pin) of line (data line) is helped by the design of multiplexer (multiplexer), does high speed multitask switching
Come the problem of reducing entity pin (pin) number of driving IC, reduce configuration whereby.
However this solution, it is identical when such as encountering the product integration of higher resolution other than production cost is expensive
The problem of (signal interference that the difficult and complicated cabling of configuration is occurred) will occur again, so known to current solution
Means, not permanent effective mode.
Summary of the invention
Concept is driven using touch-control/display integration timesharing the object of the present invention is to provide a kind of, utilizes longer signal
Output gap characteristic, so correspond to general TFT technology multiplexing circuitry, Lai Dacheng physical signal number reduce the advantages of and mesh
's.
To achieve the above object, the present invention provides a kind of In-cell touch display panel circuit framework comprising driving IC
Unit, touch-control sensing control unit and display data writing unit.Driving IC unit includes an end I/O, and is carried out by the end I/O
Timesharing exports a data-signal and a sensing signal, or receives the sensing signal by the end I/O；One touch-control sensing control unit,
The touch-control sensing control unit has at least three endpoints, and wherein first end point is couple to the end I/O of driving IC unit, and second
Endpoint is couple to common electrode, and third endpoint is couple to common bridging line (Sensor(Vcom) Line of sensing), the touch-control sensing
Control unit carries out Time-sharing control and the common electric voltage signal (Vcom) of common electrode is couple to the common bridging line (Sensor of sensing
(Vcom) Line) end I/O of driving IC unit is couple to the common bridging line of sensing by output and timesharing, and it exports or connects
Receive sensing signal；One display data writing unit, one end of the display data writing unit are couple to the I/O of driving IC unit
End, the other end are couple to the first data line, which carries out Time-sharing control, in the touch-control sensing control unit
Common electrode is couple to common bridging line (Sensor(Vcom) Line of sensing) when, the end I/O of driving IC unit is exported
Data-signal is couple to first data line and the Time-sharing control touch-control sensing control unit for the I/O of driving IC unit
When end output or reception sensing signal, make the first data line suspension joint.
In another schematical embodiment of In-cell touch display panel circuit framework, touch-control sensing control unit
Including a first transistor and a second transistor.The first transistor one end is couple to the end I/O of driving IC unit, this
Two-transistor one end is couple to common electrode, and the other end of two transistor connects altogether, and the first transistor and second transistor are point
The common electric voltage signal (Vcom) of common electrode is couple to the common bridging line of sensing in first time control by Shi Zhidong
(Sensor(Vcom) Line) output, the end I/O of driving IC unit is couple to the common bridging line of sensing in the second time
(Sensor(Vcom) Line), output or reception sensing signal.
In another schematical embodiment of In-cell touch display panel circuit framework, display data writing unit
Including a third transistor, which is couple to the end I/O of driving IC unit, and the other end is couple to the first number
According to line, third transistor timesharing actuating, when the first transistor and second transistor control common electrode being couple to sensing altogether
Logical bridging line (Sensor(Vcom) Line) when, the end the I/O outputting data signals of driving IC unit are couple to first number
According to line, and the driving IC unit end I/O is exported or is received sensing signal when the first transistor and second transistor control
When, make the first data line suspension joint.
In another schematical embodiment of In-cell touch display panel circuit framework, display data writing unit
Including a third transistor and one the 4th transistor.It is mono- that one end of the third transistor and the 4th transistor is couple to driving IC
The end I/O of member, the other end is then respectively coupled to the first data line and the second data line, when the first transistor and second transistor
Common electrode is couple to common bridging line (Sensor(Vcom) Line of sensing by control) when, the third transistor is brilliant with the 4th
The end the I/O outputting data signals of driving IC unit are couple to the first data line and the second data by body pipe timesharing actuation control
Line, and when the first transistor and second transistor control and the end I/O of driving IC unit exported or received sensing signal
When, make the first data line and the second data line suspension joint.
In another schematical embodiment of In-cell touch display panel circuit framework comprising driving IC is mono-
Member, touch-control sensing control unit and display data writing unit.Driving IC unit includes an end I/O, and is divided by the end I/O
When export a data-signal and a sensing signal, or the sensing signal is received by the end I/O；One touch-control sensing control unit, should
Touch-control sensing control unit has at least three endpoints, and first end point is couple to the end I/O of driving IC unit, the second endpoint coupling
It is connected to common electrode, third endpoint is couple to common bridging line (Sensor(Vcom) Line of sensing), touch-control sensing control is single
Member carries out Time-sharing control and the common electric voltage signal (Vcom) of common electrode is couple to the common bridging line (Sensor(Vcom) of sensing
Line) end I/O of driving IC unit is couple to by output and timesharing senses common bridging line, output or reception sensing
Signal；One display data writing unit, one end of the display data writing unit are couple to the end I/O of driving IC unit, separately
One end is couple to the first data line, which carries out Time-sharing control, will be total in the touch-control sensing control unit
Energization pole is couple to common bridging line (Sensor(Vcom) Line of sensing) when, by the end the I/O output data of driving IC unit
Signal is couple to first data line and the Time-sharing control touch-control sensing control unit is defeated by the end I/O of driving IC unit
When out or receiving sensing signal, the end I/O of driving IC unit is exported or received sensing signal is couple to the first data
Line.
In another schematical embodiment of In-cell touch display panel circuit framework, touch-control sensing control unit
Including a first transistor and a second transistor.The first transistor one end is couple to the end I/O of driving IC unit, this
Two-transistor one end is couple to common electrode, and the other end of two transistor connects altogether, and the first transistor and second transistor are point
Shi Zhidong, at the first time and the second time control by the common electric voltage signal (Vcom) of common electrode be couple to sensing it is common total
It is exported with line (Sensor(Vcom) Line), the end I/O of driving IC unit is couple in the third time and senses common share
Line (Sensor(Vcom) Line), output or reception sensing signal.
In another schematical embodiment of In-cell touch display panel circuit framework, display data writing unit
Including a third transistor and one the 4th transistor.It is mono- that the third transistor and the 4th transistor one end are couple to driving IC
The end I/O of member, the other end are couple to the first data line, third transistor timesharing actuating, when the first transistor and the second crystalline substance
Common electrode is couple to common bridging line (Sensor(Vcom) Line of sensing by body control system) when, by driving IC unit
The end I/O outputting data signals are couple to first data line, the 4th transistor timesharing actuating, when the first transistor and second
It is when the end I/O of driving IC unit is exported or receive sensing signal by transistor controls, the end I/O of driving IC unit is defeated
Out or received sensing signal is couple to the first data line.
In another schematical embodiment of In-cell touch display panel circuit framework, display data writing unit
Further include a third transistor, one the 4th transistor, one the 5th transistor and one the 6th transistor.The third transistor and this
Four transistor one end are couple to the end I/O of driving IC unit, and the other end is couple to the first data line, and the 5th transistor and
6th transistor one end is couple to the end I/O of driving IC unit, and the other end is couple to one second data line, when first crystalline substance
Body pipe and second transistor, which are controlled, is couple to common bridging line (Sensor(Vcom) Line of sensing for common electrode) when, this
The end the I/O outputting data signals of driving IC unit are couple to first and counted by three transistors and the 5th transistor timesharing actuation control
According to line or the second data line；The end I/O of driving IC unit is exported or connect when the first transistor is controlled with second transistor
When receiving sensing signal, the 4th transistor and the 6th transistor timesharing actuation control, the end I/O of driving IC unit is exported or
It receives sensing signal and is couple to the first data line and the second data line.
By above-mentioned circuit framework, in the case where timesharing driving, will driving IC unit show used data,
The signals such as the sensor that Vcom and touch-control use are attached to touch-control by circuit framework of the invention and show and integrate the active of panel
The data line (Data Line) and common bridging line (Sensor(Vcom) Line of sensing in area (active area)), subtract whereby
Few touch-control display driver integrates IC(Touch Display Driver Integration, TDDI) entity physical pipe
Foot (pin) number.
To allow the objects, features and advantages of this case those of ordinary skill in the art can be made to be more readily understood, below in conjunction with preferable
Embodiment, and cooperate attached drawing, it is described in detail below.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the schematic diagram using the In-cell touch display panel of circuit framework of the present invention.
Fig. 2 is the block schematic diagram using circuit framework of the present invention.
Fig. 3 is the timing variations schematic diagram of the timesharing driving signal first kind of the present invention.
Fig. 4 is the circuit framework schematic diagram of first embodiment of the invention.
Fig. 5 and Fig. 6 is relation schematic diagram of the circuit framework of first embodiment of the invention in first kind timing variations.
Fig. 7 is the circuit framework schematic diagram of second embodiment of the invention.
Fig. 8 and Fig. 9 is relation schematic diagram of the circuit framework of second embodiment of the invention in first kind timing variations.
Figure 10 is the timing variations schematic diagram of timesharing driving signal Second Type of the present invention.
Figure 11 is the circuit framework schematic diagram of third embodiment of the invention.
Figure 12, Figure 13 and Figure 14 are relationship of the circuit framework of third embodiment of the invention in Second Type timing variations
Schematic diagram.
Figure 15 is the circuit framework schematic diagram of fourth embodiment of the invention.
Figure 16, Figure 17 and Figure 18 are relationship of the circuit framework of fourth embodiment of the invention in Second Type timing variations
Schematic diagram.
Description of symbols:
1 circuit framework
11,11a, 11b, 11c touch-control sensing control unit
111,111a, 111b, 111c the first transistor
112,112a, 112b, 112c second transistor
12,12a, 12b, 12c display data writing unit
121,121a, 121b, 121c third transistor
The 4th transistor of 122a, 122b, 122c
The 5th transistor of 123c
The 6th transistor of 124c
2 touch-controls, which are shown, integrates panel
3,3a, 3b, 3c drive IC unit
4,4a, 4b, 4c sense common bridging line
5, the first data line of 5a
The first data line of 51b, 51c
The second data line of 52b, 52c
6,6a, 6b, 6c common electrode
The control driving component of 7 display pixels
8 touch-control sensing electrodes
9 touch-controls show effective district.
Specific embodiment
To clearly appear from feature of the invention, each component in attached drawing be only illustrate and not according to shape in kind with than
Example is drawn, and clipped known assemblies.In addition, for the consistency illustrated to the present invention is presented, it is in different embodiments, identical
Or similar label represents the same or similar component or step.The direction term being previously mentioned in embodiment, such as: upper and lower,
Left, right, front and rear etc. are only the directions with reference to attached drawing, and therefore, the direction term used is rather than to be used to limit this for illustrating
Invention, and first definition illustrates herein, in the present embodiment and following all embodiments, is previously mentioned " transistor " one in the text
Word, all for tool there are three electrode, " first electrode " refers to the electrode above " transistor " in the example shown, can for transistor drain or
Source electrode, " second electrode " refer to the electrode below " transistor ", can be the drain or source electrode of transistor, and " third electrode " refers to
The electrode (it is possible that leftward or rightward transistor gate) of " transistor " horizontal direction.
Referring to Fig. 1, the schematic diagram of the In-cell touch display panel for application circuit framework of the present invention, by that can be seen in figure
Out, circuit framework 1 shows in touch-control and integrates in panel 2, and counts respectively with driving IC unit 3, the common bridging line 4, first of sensing
Connected according to line 5 and common electrode 6, but wherein sense common bridging line 4 will touch-control show in effective district 9 with multiple touch-control sensings
Electrode 8 connects, and the first data line 5 will show in effective district 9 in touch-control and connect with the control driving component 7 of multiple display pixels
Knot；It uses the In-cell touch display panel structural representation of circuit framework 1 of the invention, specifically, technology of the invention
Focus on circuit framework 1 design change, come reduce driving IC unit 3(touch-control display driver integrate IC) entity I/O
Pin (pin) quantity overcomes current a-Si(amorphous silicon film transistor whereby) TFT or IGZO(indium gallium zinc) TFT
Panel difficulty is in the application of In-cell touch-control display panel integration technology.
Referring to Fig. 2, the block schematic diagram of application circuit framework of the present invention contains a drive in a circuit framework 1
Dynamic IC unit 3, connects at least one touch-control sensing control unit 11 and at least a display data writing unit 12, through in this way
Circuit framework, collocation timesharing driving concept, touch-control can be made to show that integrating panel 2 normally smoothly operates, and reduce
Entity pin (pin) number of IC unit 3 is driven, to realize the problem of reducing configuration；For convenience of explanation, following
Embodiment explanation is all the corresponding touch-control sensing control unit 11 of a driving IC unit 3 and display data writing unit 12, but not
Therefore it is limited technical application of the invention.
Referring to Fig. 3, the timing variations schematic diagram of the timesharing driving signal first kind of the present invention, in the present invention first
It is all to be driven with the timesharing in Fig. 3 to carry out periodical operation, specifically, one complete in embodiment, second embodiment
Cycle time (Frame time) two periods can be divided into, respectively (Display) and the second time at the first time
(Touch): at the first time (Display) when, DE locate source will be high state, and at TE source will low shape
State；And at the second time (Touch), at DE, source will be the state of low, at TE source will high state；On
The first time (Display) and the second time (Touch) stated will carry out periodically alternation repeatedly, Lai Jinhang timesharing driving behaviour
Make.
Referring to Fig. 4, being the circuit framework schematic diagram of first embodiment of the invention, it is seen in the figure that circuit framework includes
:
Touch-control sensing control unit 11 includes:
One the first transistor 111；And
One second transistor 112, the second electrode of the first electrode of the first transistor 111 and the second transistor 112
It connects altogether, the first transistor 111 and second transistor 112 are timesharing actuating, are controlled in first time by the common of common electrode 6
Voltage signal (Vcom) is couple to the common bridging line 4(Sensor(Vcom of sensing) Line) output, in the second time by the driving
The end I/O of IC unit is couple to the common bridging line 4(Sensor(Vcom of sensing) Line), output or reception sensing signal；
Display data writing unit 12 includes:
One third transistor 121,121 one end of third transistor are couple to the end I/O of driving IC unit 3, the other end
It is couple to the first data line 5,121 timesharing of third transistor actuating, when the first transistor 111 and second transistor 112 control
Common electrode 6 is couple to the common bridging line 4(Sensor(Vcom of sensing) Line) when, by the end I/O of driving IC unit 3
Outputting data signals are couple to first data line 5.
Please refer to Fig. 5 and Fig. 6, be first embodiment of the invention circuit framework in first kind timing variations (referring to figure
3) relation schematic diagram in is the variation under a complete cycle time (Frame time) of first embodiment in diagram,
In the case where (Display) at the first time, DE output is high level, and second transistor 112 and third transistor 121 will be led
Logical (ON), and TE output is low level, the first transistor 111 will end (OFF), and in this case, the first data line 5 will
Required grayscale signal when display is sent out, and senses the common electric voltage signal that common bridging line 4 then exports common electrode 6
(Vcom), above-mentioned explanation is indicated for convenience, has used arrow solid line to indicate in the case where (Display) at the first time.
And in the case where the second time (Touch), DE output is low level, second transistor 112 and third transistor
121 will end (OFF), and TE output is high level, and (ON) will be connected in the first transistor 111, in this case, it will make
Driving IC unit 3 exports the sensing signal of touch-control sensor to sensing common bridging line 4, and the first data line 5 is in this state
Under will keep floating (Floating), indicate above-mentioned explanation for convenience, make in the case where the second time (Touch)
It is indicated with arrow dotted line.
Referring to Fig. 7, being the circuit framework schematic diagram of second embodiment of the invention, the present embodiment is seen in the figure that circuit
Framework contains:
Touch-control sensing control unit 11a includes:
One the first transistor 111a；And
The first electrode of one second transistor 112a, the first transistor 111a and the second electricity of second transistor 112a
It extremely connects altogether, the first transistor 111a and second transistor 112a are timesharing actuating, are controlled in first time by common electrode 6a
Common electric voltage signal (Vcom) be couple to the common bridging line 4a(Sensor(Vcom of sensing) Line), should in the second time
The end I/O of driving IC unit is couple to the common bridging line 4a(Sensor(Vcom of sensing) Line), output or reception sensing letter
Number；
Display data writing unit 12a includes:
One third transistor 121a；And
One the 4th transistor 122a, third transistor 121a and the 4th one end transistor 122a are couple to driving IC
The end I/O of unit 3a, the other end are couple to the first data line 5a, third transistor 121a timesharing actuating, when the first crystal
Pipe 111a and second transistor 112a, which is controlled, is couple to the common bridging line 4a(Sensor(Vcom of sensing for common electrode 6a)
When Line), the end the I/O outputting data signals of driving IC unit 3a are couple to first data line 5a, the 4th transistor
122a timesharing actuating, when the first transistor 111a and second transistor 112a control is defeated by the end I/O of driving IC unit 3a
When out or receiving sensing signal, the end I/O of driving IC unit 3a is exported or received sensing signal is couple to the first number
According to line 5a.
Fig. 8 and Fig. 9 are please referred to, is the circuit framework of second embodiment of the invention in first kind timing variations (Fig. 3)
Relation schematic diagram, be the variation under a complete cycle time (Frame time) of second embodiment in diagram, the
In the case where one time (Display), DE output is that high, second transistor 112a and third transistor 121a will be connected
(ON), and TE output is that low, the first transistor 111a and the 4th transistor 122a will end (OFF), in this case, the
One data line 5a required grayscale signal (being passed through by the path of third transistor 121a) when will send out display, and sense altogether
Logical bridging line 4a then exports the common electric voltage signal (Vcom) of common electrode 6a, above-mentioned explanation is indicated for convenience, first
The case where time (Display), has used arrow solid line to indicate.
And in the case where the second time (Touch), DE output is low level, second transistor 112a and third transistor
121a will end (OFF), and TE output is high level, and the first transistor 111a and the 4th transistor 122a will be connected
(ON), in this case, it will make the sensing signal for driving IC unit 3a output touch-control sensor to sensing common bridging line
4a(is passed through by the path of the first transistor 111a) and the first data line 5a(passed through by the path of the 4th transistor 122a), herein
Under state, data line output will be made not keep floating (Floating), and it is synchronous with touching signals, further make to couple
Interference reduces, and indicates above-mentioned explanation for convenience, has used arrow dotted line to indicate in the case where the second time (Touch).
Above-mentioned first embodiment and second embodiment can multitask because of the concept using display and touch-control timesharing driving
Processing display data and touch sense signals, so the I/O foot position of Solid slice IC, can be reduced to the 1/2 of original demand number,
Improve the challenge of display and touch control integrated technical route layout.
Referring to Fig. 10, the timing variations schematic diagram of timesharing driving signal Second Type of the present invention, in the present invention
It is all to be driven with the timesharing in Figure 10 to carry out periodical operation in three embodiments and fourth embodiment, specifically, one
Complete cycle time (Frame time) can be divided into three sections, respectively first time (Display1), the second time
(Display2) and the third time (Touch): at (Display1) at the first time, source at DE, source will be at DE1
The state of high, and source at TE, at DE2 source will low state；When the second time (Display2), source at DE,
Source will be the state of high at DE2, and source at TE, at DE1 source will low state；And when in the third time
(Touch) when, source at DE, source will be the state of low at source and DE2 at DE1, and at TE source will high shape
State；Above-mentioned first time (Display1), the second time (Display2) and the third time (Touch) will carry out periodic
Repeatedly in turn, Lai Jinhang timesharing driving operation.
Figure 11 is please referred to, is the circuit framework schematic diagram of third embodiment of the invention, is seen in the figure that circuit framework packet
Contain:
Touch-control sensing control unit 11b includes:
One the first transistor 111b；And
The first electrode of one second transistor 112b, the first transistor 111b and the second electricity of second transistor 112b
It extremely connects altogether, the first transistor 111b and second transistor 112b are timesharing actuating, will in first time and the control of the second time
The common electric voltage signal (Vcom) of common electrode 6b is couple to the common bridging line 4b(Sensor(Vcom of sensing) Line), the
The end I/O of driving IC unit 3b is couple to the common bridging line 4b(Sensor(Vcom of sensing by three times) Line), output or
Receive sensing signal；
Display data writing unit 12b includes:
One third transistor 121b: and
One end of one the 4th transistor 122b, third transistor 121b and the 4th transistor 122b are couple to driving IC
The end I/O of unit 3b, the other end is then respectively coupled to the first data line 51b and the second data line 52b, when the first transistor
111b and second transistor 112b, which is controlled, is couple to the common bridging line 4b(Sensor(Vcom of sensing for common electrode) Line)
When, the end I/O of driving IC unit 3b is exported number by third transistor 121b and the 4th transistor 122b timesharing actuation control
It is believed that number being couple to the first data line 51b and the second data line 52b, and work as the first transistor 111b and second transistor
When 112b controls the end the I/O output by driving IC unit 3b or receives sensing signal, make the first data line 51b and the second data
Line 52b suspension joint.
Figure 12, Figure 13 and Figure 14 are please referred to, is the circuit framework of third embodiment of the invention in Second Type timing variations
In relation schematic diagram, be the variation under a complete cycle time (Frame time) of 3rd embodiment in diagram,
At the first time in the case where (Display1), exporting at DE and at DE1 is high level, second transistor 112b and third transistor
(ON) will be connected in 121b, and exporting at DE2 and at TE is low level, and the first transistor 111b and the 4th transistor 122b will
End (OFF), in this case, the first data line 51b will send out required grayscale signal when display, and sense common total
The common electric voltage signal (Vcom) that common electrode 6b is then exported with line 4b, indicates above-mentioned explanation for convenience, at the first time
(Display1) the case where, has used arrow heavy line to be indicated.
In the case where second time (Display2), output is high level at DE and at DE2, second transistor 112b and the
(ON) will be connected in four transistor 122b, and exporting at DE1 and at TE is low level, the first transistor 111b and third transistor
112b will end (OFF), and in this case, the second data line 52b will send out required grayscale signal when display, and feel
The common electric voltage signal (Vcom) that common bridging line 4b then exports common electrode 6b is surveyed, indicates above-mentioned explanation for convenience,
The case where second time (Display2), has used arrow fine line to be indicated.
And in the case where third time (Touch), DE at, at DE1 and be low level at DE2, second transistor 112b,
Third transistor 121b and the 4th transistor 122b will end (OFF), and at TE be high level, and the first transistor 111b will
It is connected (ON), in this case, it will make to drive the sensing signal of IC unit 3b output touch-control sensor common total to sensing
With line 4b, and the first data line 51b and the second data line 52b will keep floating (Floating) in this case, be
Facilitate the explanation for indicating above-mentioned, uses arrow dotted line to be indicated in the case where third time (Touch).
Figure 15 is please referred to, is the circuit framework schematic diagram of fourth embodiment of the invention, is seen in the figure that circuit framework packet
Contain:
Touch-control sensing control unit 11c includes:
One the first transistor 111c；And
The first electrode of one second transistor 112c, the first transistor 111c and the second electricity of second transistor 112c
It extremely connects altogether, the first transistor 111c and second transistor 112c are timesharing actuating, will in first time and the control of the second time
The common electric voltage signal (Vcom) of common electrode 6c is couple to the common bridging line 4c(Sensor(Vcom of sensing) Line), the
The end I/O of driving IC unit 3c is couple to common bridging line 4c (Sensor(Vcom) Line of sensing by three times), output
Or receive sensing signal；
Display data writing unit 12c includes:
One third transistor 121c；
One the 4th transistor 122c；
One the 5th transistor 123c；And
One the 6th transistor 124c, third transistor 121c and the 4th one end transistor 122c are couple to driving IC
The end I/O of unit 3c, the other end are couple to one first data line 51c, and the 5th transistor 123c and the 6th transistor
The one end 124c is couple to the end I/O of driving IC unit 3c, and the other end is couple to one second data line 52c, when the first crystal
Pipe 111c and second transistor 112c, which is controlled, is couple to the common bridging line 4c(Sensor(Vcom of sensing for common electrode 6c)
When Line), third transistor 121c is defeated by the end I/O of driving IC unit 3c with the 5th transistor 123c timesharing actuation control
Data-signal is couple to the first data line 51c or the second data line 52c out, when the first transistor 111c and second transistor
When 112c controls the end the I/O output by driving IC unit 3c or receives sensing signal, caused via the 4th transistor 122c timesharing
It is dynamic, the end I/O driving IC unit 3c is exported or received sensing signal is couple to the first data line 51c, and via the
Six transistor 124c timesharing actuating, the end I/O driving IC unit 3c is exported or received sensing signal is couple to second
Data line 52c.
Figure 16, Figure 17 and Figure 18 are please referred to, is the circuit framework of fourth embodiment of the invention in Second Type timing variations
In relation schematic diagram, under the cycle time (Frame time) for completely driving operation of the 5th embodiment in diagram
Variation, in the case where (Display1) at the first time, at DE and the output of the place DE1 is high level, second transistor 112c and the
(ON) will be connected in three transistor 121d, and exporting at DE2 and at TE is low level, the first transistor 111c, the 4th transistor
122c, the 5th transistor 123c and the 6th transistor 124c will end (OFF), and in this case, the first data line 51c will
Required grayscale signal (being passed through by the path of third transistor 121c) when display is sent out, and it is then defeated to sense common bridging line 4c
The common electric voltage signal (Vcom) of common electrode 6c out, indicates above-mentioned explanation for convenience, at the first time (Display1)
The case where used arrow heavy line to be indicated.
In the case where second time (Display2), output is high level at DE and at DE2, second transistor 112c and the
(ON) will be connected in five transistor 123c, and exporting at DE1 and at TE is low level, the first transistor 111c, third transistor
121c, the 4th transistor 122c and the 6th transistor 124c will end (OFF), and in this case, driving IC unit 3c will be
Second data line 51c sends out required grayscale signal (being passed through by the path of the 5th transistor 123c) when display, and senses altogether
Logical bridging line 4c then exports the common electric voltage signal (Vcom) of common electrode 6c, above-mentioned explanation is indicated for convenience, second
The case where time (Display2), has used arrow heavy line to be indicated.
And in the case where third time (Touch), DE at, at DE1 and be low at DE2, second transistor 112c, the
Three transistor 121c and the 5th transistor 123c will end (OFF), and output is high, the first transistor 111c, the at TE
Four transistor 122c and the 6th transistor 124c will be connected (ON), in this case, it will make to drive IC unit 3c output touching
The sensing signal of control sensor is to sensing common bridging line 4c, the first data line 51c (by the path of the 4th transistor 122c
Passing through) and the second data line 52c (being passed through by the path of the 6th transistor 124c) will make data line output not in this case
Floating (Floating) can be kept, and it is synchronous with touching signals, further reduce coupled interference.In order to facilitate in expression
The explanation stated has used arrow dotted line to be indicated in the case where third time (Touch).
Above-mentioned 3rd embodiment and fourth embodiment can multitasking two displays because driving concept using timesharing
Data and touch sense signals, so the I/O foot position of entity IC, can a more step be kept to the 1/3 of original demand number, so more can
Convenient application and the challenge for improving display and touch control integrated technical route layout.
The explanation that the foregoing is merely presently preferred embodiments of the present invention, rather than the present invention is narrowly limited to above-mentioned implementation
Example, all within spirit of the invention and claim and principle, any modification, equivalent replacement, improvement and so on,
It should be included within protection scope of the present invention.
Claims (8)
1. a kind of In-cell touch display panel circuit framework, comprising:
One driving IC unit, driving IC unit include an end I/O, and by the end I/O carry out timesharing export a data-signal and
One sensing signal, or the sensing signal is received by the end I/O；
An at least touch-control sensing control unit, the touch-control sensing control unit have at least three endpoints, and first in the endpoint
Endpoint is couple to the end I/O of driving IC unit, and the second endpoint in the endpoint is couple to common electrode, in the endpoint
Third endpoint be couple to the common bridging line of sensing, which carries out Time-sharing control for the common of common electrode
Voltage signal is couple to the common bridging line output of sensing and timesharing and the end I/O of driving IC unit is couple to sensing altogether
Logical bridging line, output or reception sensing signal；And
An at least display data writing unit, one end of the display data writing unit are couple to the end I/O of driving IC unit,
The other end is couple to the first data line, which carries out Time-sharing control, incites somebody to action in the touch-control sensing control unit
Common electrode be couple to sense common bridging line when, by the end the I/O outputting data signals of driving IC unit be couple to this first
The end I/O of driving IC unit is exported or is received sensing signal by data line and the Time-sharing control touch-control sensing control unit
When, make the first data line suspension joint.
2. In-cell touch display panel circuit framework according to claim 1, the wherein touch-control sensing control unit packet
Contain:
One the first transistor；And
One second transistor, the first transistor one end are couple to the end I/O of driving IC unit, second transistor one end coupling
It is connected to common electrode, the other end of two transistor connects altogether, and the first transistor and second transistor are timesharing actuating, at first
Between control the common electric voltage signal of common electrode be couple to the common bridging line of sensing export, it is in the second time that driving IC is mono-
The end I/O of member is couple to the common bridging line of sensing, output or reception sensing signal.
3. In-cell touch display panel circuit framework according to claim 2, the wherein display data writing unit packet
Contain:
One third transistor, the third transistor one end are couple to the end I/O of driving IC unit, and the other end is couple to the first number
According to line, third transistor timesharing actuating, when the first transistor and second transistor control common electrode being couple to sensing altogether
When logical bridging line, the end the I/O outputting data signals of driving IC unit are couple to first data line, and work as the first crystal
When the end I/O of driving IC unit is exported with second transistor control or receive sensing signal by pipe, make the first data line suspension joint.
4. In-cell touch display panel circuit framework according to claim 2, wherein display data writing unit is also wrapped
Contain:
One third transistor: and
One end of one the 4th transistor, the third transistor and the 4th transistor is couple to the end I/O of driving IC unit, another
End is then respectively coupled to the first data line and the second data line, when the first transistor and second transistor are controlled common electrode
It is couple to when sensing common bridging line, the third transistor and the 4th transistor timesharing actuation control are by the I/ of driving IC unit
The end O outputting data signals are couple to the first data line and the second data line, and when the first transistor and second transistor control
When the end I/O of driving IC unit is exported or receives sensing signal by system, make the first data line and the second data line suspension joint.
5. a kind of In-cell touch display panel circuit framework, comprising:
One driving IC unit, driving IC unit include an end I/O, and by the end I/O carry out timesharing export a data-signal and
One sensing signal, or the sensing signal is received by the end I/O；
An at least touch-control sensing control unit, the touch-control sensing control unit have at least three endpoints, and first in the endpoint
Endpoint is couple to the end I/O of driving IC unit, and the second endpoint in the endpoint is couple to common electrode, in the endpoint
Third endpoint be couple to the common bridging line of sensing, which carries out Time-sharing control for the common of common electrode
Voltage signal is couple to the common bridging line output of sensing and timesharing and the end I/O of driving IC unit is couple to sensing altogether
Logical bridging line, output or reception sensing signal；And
An at least display data writing unit, one end of the display data writing unit are couple to the end I/O of driving IC unit,
The other end is couple to the first data line, which carries out Time-sharing control, incites somebody to action in the touch-control sensing control unit
Common electrode be couple to sense common bridging line when, by the end the I/O outputting data signals of driving IC unit be couple to this first
The end I/O of driving IC unit is exported or is received sensing signal by data line and the Time-sharing control touch-control sensing control unit
When, the end I/O of driving IC unit is exported or received sensing signal is couple to the first data line.
6. In-cell touch display panel circuit framework according to claim 5, the wherein touch-control sensing control unit packet
Contain:
One the first transistor；And
One second transistor, the first transistor one end are couple to the end I/O of driving IC unit, second transistor one end coupling
It is connected to common electrode, the other end of two transistor connects altogether, and the first transistor and second transistor are timesharing actuating, at first
Between and the control of the second time the common electric voltage signal of common electrode is couple to the common bridging line of sensing and is exported, will in the third time
The end I/O of driving IC unit is couple to the common bridging line of sensing, output or reception sensing signal.
7. In-cell touch display panel circuit framework according to claim 6, the wherein display data writing unit packet
Contain:
One third transistor；And
One the 4th transistor, the third transistor and the 4th transistor one end are couple to the end I/O of driving IC unit, another
End is couple to the first data line, third transistor timesharing actuating, when the first transistor and second transistor control will be common
When electrode is couple to sensing common bridging line, the end the I/O outputting data signals of driving IC unit are couple to first data
Line, the 4th transistor timesharing actuating, when the first transistor and second transistor are controlled the end the I/O institute of driving IC unit
When output or reception sensing signal, the output of the end I/O or received sensing signal by driving IC unit are couple to the first data
Line.
8. In-cell touch display panel circuit framework according to claim 6, wherein display data writing unit is also wrapped
Contain:
One third transistor；
One the 4th transistor；
One the 5th transistor；And
One the 6th transistor, the third transistor and the 4th transistor one end are couple to the end I/O of driving IC unit, another
End is couple to the first data line, and the 5th transistor and the 6th transistor one end are couple to the end I/O of driving IC unit,
The other end is couple to one second data line, when the first transistor and second transistor control common electrode being couple to sensing altogether
When logical bridging line, the third transistor and the 5th transistor timesharing actuation control are by the end the I/O output data of driving IC unit
Signal is couple to the first data line or the second data line；When the first transistor and second transistor are controlled driving IC unit
The output of the end I/O or when receiving sensing signal, the 4th transistor and the 6th transistor timesharing actuation control are mono- by driving IC
The end the I/O output of member or reception sensing signal are couple to the first data line and the second data line.
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| CN201510410656.5A CN106356014B (en) | 2015-07-14 | 2015-07-14 | In-cell touch display panel circuit framework |
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| CN201510410656.5A CN106356014B (en) | 2015-07-14 | 2015-07-14 | In-cell touch display panel circuit framework |
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| CN106356014B true CN106356014B (en) | 2019-09-20 |
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| TWI704486B (en) * | 2019-02-21 | 2020-09-11 | 大陸商北京集創北方科技股份有限公司 | TDDI touch display device capable of saving touch circuit pins and information processing device using the same |
| CN112306274A (en) * | 2019-07-31 | 2021-02-02 | 群创光电股份有限公司 | Electronic device |
| US11099675B1 (en) | 2020-04-23 | 2021-08-24 | Novatek Microelectronics Corp. | Display device, operation method, driving circuit and timing control circuit |
| CN114546165B (en) * | 2022-02-14 | 2023-10-03 | 武汉华星光电技术有限公司 | Touch display panel and display device |
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